Music-leaf turner.



C. BERGREN.

MUSIC LEAF TURNER.

APPLIOATION FILED r113. 24, 1912.

3 SHEETS-SHEET 1.

Patented Oct. 7

INVENTOR WITNESS S ATTORNEY COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

G. BERGRBN.

MUSIC LEAF TURNER. APPLICATION FILED I'EB.24,'1912.

3 SHEETS-SHEET 2.

Patented 0ct.7, 1913.

INVENTOR BY 6&5?

V WITNESSES f W ATTORNEY coLUMIlA PLANDORAPH c0.. WASHINGTON. n c,

G BEEGRBN.

MUSIC LEAF TURNER.

APPLICATION FILED FEB. 24, 1912.

1,075,084. Patented Oct. 7, 1913.

3 SHEETS-SHEET 3.

-31 2 r 29 21 be INVENTOR- ATTORNEY cow/0mm PLANOGRAPH RIO-,WASIHNGTON. n. c

unrrnn strarns PATENT HARLES BEBGREN, Q DULUTH NNE O A- mUslq- EAF To all whom, it may concern Be it known that I, CHARLES BERGREN, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Music- Leaf Turners, of which the following is a specification, reference being had therein to the accompanying drawing;

My invention relates to improvements in music leaf turners.

The object of my invention is to proride a leaf turner whereby the leaves of music may be turned by a slight touch of the finger on a key and can be turned backward by a second touch on the same key, thus avoidingthe delay and annoyance of grasping the leaf with the thumb and finger.

Another object of my invention is to provide a more simple and durable folding leaf turner adapted to accomplish the desired results and having certain details of structure fully set forth in the specification.

In the accompanying drawingsFigure 1 is a front elevation of my improved music leaf turner in its extended position. Fig. 2 is a top plan view of Fig. 1 showing a portion of the operatingmechanism in dotted lines, with a portion of the music supporting rack omitted. Fig. 3 is a vertical sectional view taken on the line 4-4 of Fig. 2, Fig. 4 is an enlarged detached top plan view of one of the operating keys and 'its connection, showing the reversing mechanism for turning the leaves backward.

Referring now to the drawings, 1 repre: sents the bottom or base of the rectangular shaped box forming the main body of my leaf turner. 2 represents the top of the body, 3 the front wall, 4 and 5" the end walls and 6 the back wall. This back wall extends upwardly as indicated at 7 con-,

siderably above the top 2 of the body and supporting the forwardly protecting shelf 8.

The shelf 8 slidably carries upon its upper surface an auxiliary shelf 9, which is attaehed thereto by means of large headed screws or bolts 1Q fixed to the underside 9f the shelf 9, end extending d wnw-ardly through the'slots 11 in the'shelf 8, these a e e n term d t ei f wa d end sufiiciently' large to admit of the heads of the screws or bolts 10 freelypassing there through so that the shelf 9 may be readily removed by sliding it forwardand lifting.

Specification of Letters latent.

Application filed February 24, 1812.

Serial No. 679,548.

The back 12 of the shelf 9 extends upward and centrally terminates in the mast- 13, and at the ends '14 and 15 of the back 12 are pivotally carried foldable extensions 16, which latter together with the mast 13 pivotally carry a suitable folding rack 17 for the purpose of supporting themusic book or sheets as the case may be. While I have shown and prefer this form of folding rack, it is evident that any other suitable form of support may be used with good result, but the object of having it foldable is its convenience in transportation.

Vertically journale'd within the base 1 and top 2 of the body of my improved device is a nest of short telescopic shafts, the con tral one 18 of which extends upward to a point just below the shelf 8 and terminates in the forwardly projecting sheet operating rod 19, the outerend ofwhich terminates in the spiral crook'ZO in which the lower edge of the music is held. On the lower end of the shaft 18 is fixed the gear wheel 2-1 meshing with and operated by the quadrant 22 mounted upon the vertical shaft The upper end of the shaft 18 is drilled vertically to receive and support the upright leafsupporting rod 24-which has at its upper end any desired number of loosely mounted wire clips 25 mm which the sheets of music are inserted and held as desired. Surrounding the shaft 18 and above the gear 21 and operative independent therefrom is the shaft 26 terminating. at its upper end in the forwardly projecting sheet operating rod 27 having at its extreme outer end a sheet clip 28 similar to the sheet clip 20. V

The shaft 26 carries at its lower end a gear 29, operated by the quadrant 30. Surround: ing the shaft 26 is the shaft 31 carrying a gear 32 at its lower end operated by the quadrant 33 and whose upper end terminates in the sheet operating rod 34 having a sheet clip 35 at its extreme outer end and surrounding this latter shaft 31 is the fourth shaft 36 carrying the quadrant operated gear 37' at its lower end and terminating at its upper end the rod 38 having a leaf holding elip 39 at its egtrenae outer end. The gear 37' meshes with and is eperatedby the quadrant 4Q.

att e a d l r rne f he b dy box is mounted the horizontal shaft 41, upon which are mountedfour suitably arranged equidistant finger keys 42, the fingercons BatentedOot, a, 1913. i

tacting portion of which extends out through the forward wall of the box. These four keys are identical in every particular and are held in a raised operative position by means of a suitable spring 43 connected to the bottom 1 of the box and the opposite end to the inwardly projecting arm 44 extending from the hub of each one of the keys. Directly opposite each key and inward some distance therefrom is a vertically mounted shaft 45, each shaft having fixed thereto a cross-arm 4L6, to receive motion from the finger keys, and a fiXed bellcrank arm 47, each crank arm being directly opposite and connected to its respec tive quadrant by means of suitable pitmen 18, as clearly shown in dotted lines Fig. 2.

Loosely mounted upon the shaft 41 and each side of each. of the finger keys 42 is an upwardly projecting bell-crank lever 49, which are connected by means of pitmen 50 to their respective ends of the cross-arms 46 on the shafts 45, whereby mot-ion is imparted thereto. Upon the inner peripheral surface of each of the bell-crank hubs 49 are formed two pairs of dogs or lugs 51 and 52 for engagement with the triangular cam 53, which is p'ivotally mounted upon the upper flattened surface of the hub of the finger key disposed between. each pair of bell-crank hubs. These projecting lugs are so arranged that when the finger key is depressed and thereby the key hub revolved, either one corner or the other of the cam 53 will engage one or the other of the lugs 51 and carry with it the Lell-crankhub thus engaged and upon a second depressing of the finger key the opposite bell-crank hub will be engaged as the cam 53 will be thrown to the opposite side in returning to its nor mal position by passing the lug 52 upon whichever hub it just previously engaged, thus the bell-cranks 49 will be operated alternate y at each downward action of the finger key and impart such motion through the cross-arm, quadrant and gear connections above described to their respective sheet-holding rods.' Thus the sheets of music may be turned from side to side of the holder or rack by the manipulation of the finger keys, and if a sheet is swung to one side by a downward pressure of the finger key a second pressure of the same key will swing the sheet back to its original position without any shifting or altering of the device whatever. It is evident from the foregoing that a less or greater number of sheet operating keys and attachments may' be used than what are here shown, but for ordinary purposes it would appear that four is about right.

The adjustment of the shelf 9 carrying the rack 17 is for the accommodation of difierent sized music books as the book may be opened and placed in the space 54 allowing the sheetholding rod 24 to remain in place which will not interfere in the least with the operation of the sheets and the space 54; may be regulated by the sliding forward or back of the shelf and rack, a longitudinal slot 55 occurring in the shelf 9 to admit of such action without disturbing the rod 2st.

In the event of detached sheets of music l being used, the rear vertical edges of the sheets will be slipped into the clips 25, while the lower forward edges will be held within the clips upon the outer ends of the operating rods as before described and be turned from right to left as desired.

As a form of convenient support for my music holder and operator 1. provide the fixed socket 56 attached to the bottom thereof whereby the device may be placed upon a supporting rod 57 or any other convenient form of holder may be utilized.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. A music leaf turner, comprising a bodyportion, concentric shafts mounted in said body-portion, an arm carried by each shaft and adapted to turn. the leaves of music, horizontally pivoted keys within the bodyportion, means for oscillating said arms, two links pivotally connected to the operating means one on each side of each key, and a pawl pivoted to each key and adapted to operate one link on the first downward movement thereof, and the other link on the second depression thereof, whereby the leaves of music are turned back and forth by the same key.

2. A music leaf turner comprising a body portion, concentric shafts mounted in said body-portion, an arm carried by each shaft above the bodyportion, a gear carried by each shaft within the body portion, segments meshing with said gears, horizontally pivoted keys within the body portion,'two links connected to a cross-arm connected to each segment and extending on opposite sides of each key and a pawl carried by the key and adapted to engage one of the links on its first downward movement or depression and the other link on the second depression thereof, whereby the leaves of the music are turned back and forth by the same key.

3. A music leaf turner, comprising a body portion, concentric shafts mounted therein, arms carried by the upper end of each shaft, a gear carried by the lower end of each shaft within the body portion, segments meshing with said gears, horizontally pivoted keys within the body portion two links connected to a cross arm connected to each segment and extending on opposite sides and pivoted to the keys, and a pawl pivoted to the key and adapted to engage one link on the first downward movement or depression thereof,

and the other link on the second depression thereof, whereby the leaves of music are turned back and forth by the same key.

4 A music leaf turner, comprising a body portion, a series of concentric shafts mounted in the body portion, a leaf turning arm carried by the upper end of each shaft, a gear carried by the lower end of each shaft within the body portion, a segment pivotally mounted in the body portion and meshing with the gears, a key for each segment and an automatic means carried by the key for reversing the direction of movement of the segment upon the second depression of the key.

A music leaf turner col'nprising a body portion, concentric shafts mounted in said body portion, an arm carried by each shaft above the body portion, a gear carried by each shaft within the body portion, pivoted segments within the body portion and meshing with the gears, a horizontally pivoted key in the body portion for each segment, an operated connection between each segment and a key and automatic means carried by the key for moving the segment in the reverse direction upon the second depression of the key.

(3. A music leaf turner comprising a body portion, pivoted leaf turning arms mounted on the body portion, means for oscillating said arms, horizontally pivoted keys within the body portion, a bell-crank lever mounted on the pivot of said key on each side thereof, a link connected to each bell-crank lever and extending rearwardly and connected to a pivoted arm operating the arm turning means, a pawl pivoted to the key and adapted to engage one bell-crank lever on the first downward movement thereof, and the other bell-crank lever on the second depression thereof whereby the leaves of music are turned back and forth by the same key.

7. A music leaf turner, comprising a body portion, concentric shafts mounted therein, leaf turning arms carried by the shafts, means within the body portion for independently operating said shafts, a key horizontally pivoted in the body portion for each arm operating means, ,a bell-crank lever loosely mounted on the pivot of the key on each side thereof, a vertically pivoted shaft in rear of the key, a link connecting each end of the beam with the respective bell-crank lever, two upwardly extending lugs carried by each bell-crank lever adja cent the key and a pivoted pawl carried by the key and adapted to engage the lugs on one key on the first depression thereof, and the lugs of the second bell-crank lever upon the depression, whereby the leaf turn ing arms are oscillated back and forth by the same key.

8. A music leaf turner comprising a bodyportion, a rack carried by each end thereof,

a shelf carried by the said rack, a. Vertically disposed holding means, vertically arranged concentric shafts in said body portion, arms carried by the shafts above the body portion, the outer ends of the arms having coils adapted to engage the leaves and hold the same, gears carried by said shafts, a vertically disposed shaft, segments mounted on said shaft meshing with the gears, a horizontally arranged shaft, operating keys mounted on said shaft, oscillating members mounted on the key shaft on each side of each key and a link bell-crank connection between the said members and the segments, and means carried by the key for connecting one of the members thereto on the first depression and connecting the second member thereto on the second depression of the key.

9. A music leaf turner, comprising a body portion, concentric shafts mounted therein, a leaf turning arm carried by the upper end of each shaft, a gear carried by the lower end of each shaft, a vertically disposed pivot within the body portion, a series of segments loosely mounted on said pivot and meshing with its respective gear, a horizontally disposed shaft within the frame, a series of keys looselv mounted on the shaft on each side of the gear, a standard vertically pivoted in the body portion in rear of each key, a link connected to each bellcrank lever on opposite sides of the keys and connected to the outer ends of the beam, an arm carried by the shaft, a link connecting said arm and its respective segment, each bell-crank lever having two upwardly eX- tending lugs adjacent the key, a pivoted pawl carried by the upper face of the key and adapted to engage the lugs of one 001- lar upon the first depression of the key to automatically adjust itself to engage the lugs of the bell-crank lever on the opposite side of the key whereby the leaf turning arms are moved backward and forward by a single key.

10. A music leaf turner comprising a body-portion, concentric shafts mounted therein, leaf turning arms carried by the shafts, means within the body-portion for independently operating said shafts, a key horizontally pivoted in the body-portion for each arm operating means, a bell-crank lever loosely mounted on the pivot of the key on each side thereof, and means for connecting said bell-crank levers to the keys, whereby the concentric shaft may be operated in a reverse direction by the second depression of the key.

11. A music leaf turner comprising a body-portion, concentric shafts mounted therein, leaf turning arms carried by the shafts, means within the body portion for independently operating the shafts, a key horizontally pivoted in the body-por- 13c tion for each arm operating means, bell crank lever loosely mounted on the pivot of the key on each side thereof, a vertically pivoted shaft in rear of the key, an arm carried by said shaft, a link connecting each end of the arm with the respective bell-crank levers,

two upwardly extending lugs carried by each bell-crank lever adjacent the key, and a pivoted pawl carried by the key adapted to engage the lug on one key on the first depression thereof, and the lug of the seca 0nd bell-crank lever engaging the pawl and moving it over so that it will engage the lug on the second-bell crank lever upon the second depression of the key, whereby the leaf turning arms are oscillated back and forth by the same key. In testimony whereof I hereunto aflix my i signature in the presence of two witnesses. CHARLES BERGREN.

WVitnesses 1 H. W. COFFIN, i l V. L. SEAToN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

